Metallurgical furnace

Details Metallurgical furnace Metallurgical furnace

1976-06-22

1977-03-01

Dost, Gerald A.

Metallurgical apparatus

Means for treating ores or for extracting metals

By means applying heat to work, e.g., furnace

266197, 266280, C21B 710, C21B 702

Patent

active

040098710

ABSTRACT:
In a metallurgical furnace having a shaft heating section for use with sized material, an improvement wherein a plurality of projections is formed on the interior wall of the preheat zone of the furnace. The length of the projections is equal to 5 to 15% of the diameter of the shaft and the projections are spaced from each other a distance equal to two to ten times the length thereof. The projections may be formed as concentric rings around the interior wall of the preheat zone of the furnace or as a continuous helix formed on the interior wall. If desired, cooling tubes may be placed within the projections.

REFERENCES:
patent: 964885 (1910-07-01), Scott

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